December 22, 2024
Garbage
A variable can only reference one object at a time. This object is no longer assigned to the variable frog1, therefore it is removed from the system.
Previous page « Assignment exercise
⇑ Up to top of page
» OU Courses
» Basic Smalltalk
- What is an object?
- Object protocol
- Objects and encapsulation
- Encapsulation continued
- Abstraction
- Reuse
- Object attributes
- The concept of class
- Class hierarchy and inheritance
- Variables
- Messages
- Assignment
- Methods
- Accessor messages
- Guide to using accessors
- The Artwork class
- The protocol of Artwork and its subclasses
- The instance methods of Artwork
- self
- Class methods
- Variable-reference diagrams
- Assignment exercise
- Object-interaction diagrams
- Textual representation (print-strings)
- Precedence rules
- The Dialog class
- Blocks
- Branching
- Boolean messages
- Conclusion
» Collections
- Introduction
- Set and Bag
- Set protocol
- Dictionary
- Dictionary protocol
- Array
- Array protocol
- Array scenario
- String protocol
- Symbol protocol
- OrderedCollection
- OrderedCollection protocol
- The exhibition collection
- SortedCollection
- The retrospective collection
- Queues
- Queue and BuyerQueue
- Iteration exercise
» Software Development
» Miscellaneous
» Smalltalk Exercises
© 2024 John McSweeney |
Home |